Symfony HttpClient Denis Brumann @dbrumann [email protected] Photo: Martina Nolte, Lizenz: Creative Commons by-sa-3.0 de https://commons.wikimedia.org/wiki/File:2013-06-08_Projekt_Hei%C3%9Fluftballon_DSCF0801.jpg 

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Denis Brumann @dbrumann Software Developer Berlin, Germany 

@dbrumann 4 Making a Request in PHP 

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@dbrumann 11 Along Came Guzzle 

@dbrumann 12 composer require guzzle/guzzle 

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@dbrumann 18 More Guzzle, More Cry 

@dbrumann 19 composer require guzzlehttp/guzzle 

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@dbrumann 22 Library A Library B Guzzle 5 Guzzle 6 Your App 

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@dbrumann 26 Library A Library B Httplug Httplug Your App Httplug Guzzle 6-Adapter Guzzle 5-Adapter 

@dbrumann 27 Encourage devs to depend on the HTTPlug interface instead of concrete clients. Provide good quality HTTP- related packages to the PHP community. Over time, make HTTPlug a PHP Standards Recommendation (PSR) Goals 

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@dbrumann 32 The goal of this PSR is to allow developers to create libraries decoupled from HTTP client implementations. This will make libraries more reusable as it reduces the number of dependencies and lowers the likelihood of version conflicts. 

@dbrumann 33 HttpClientInterface::sendRequest() RequestInterface ResponseInterface 

@dbrumann 34 RequestExceptionInterface 

@dbrumann 36 NetworkExceptionInterface 

@dbrumann 37 A Client must not treat a well-formed HTTP request or HTTP response as an error condition. 

@dbrumann 38 How to create a RequestInterface? 

@dbrumann 36 $psr17Factory = new \Nyholm\Psr7\Factory\Psr17Factory(); $psr18Client = new \Buzz\Client\Curl($psr17Factory); $request = $psr17Factory->createRequest('GET', 'http://tnyholm.se'); $response = $psr18Client->sendRequest($request); 

@dbrumann 39 $psr17Factory = new \Nyholm\Psr7\Factory\Psr17Factory(); $psr18Client = new \Buzz\Client\Curl($psr17Factory); $request = $psr17Factory->createRequest('GET', 'http://tnyholm.se'); $response = $psr18Client->sendRequest($request); 

@dbrumann 37 How to configure the client? 

@dbrumann 38 How to perform batch requests? 

@dbrumann 39 How to perform asynchronous requests? 

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@dbrumann 44 Library A Library B Guzzle 5 Guzzle 6 Your App 

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@dbrumann 48 $response = $this->httpClient->request( 'GET', 'https://reqres.in/api/users' ); $data = $response->toArray(); 

@dbrumann 49 composer require symfony/http-client 

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@dbrumann 51 HttpClient::create() Curl Native 

@dbrumann 52 Symfony\Component\HttpClient\Psr18Client 

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@dbrumann 55 $response = $httpClient->request( 'GET', 'https://httpbin.org/get', [ // these values are automatically encoded // before including them in the URL 'query' => [ 'token' => '...', 'name' => '...', ], ] ); 

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@dbrumann 58 @throws TransportExceptionInterface When a network error occurs @throws RedirectionExceptionInterface On a 3xx when $throw is true and the "max_redirects" option has been reached @throws ClientExceptionInterface On a 4xx when $throw is true @throws ServerExceptionInterface On a 5xx when $throw is true 

@dbrumann 60 public function getHeaders(bool $throw = true): array; public function getContent(bool $throw = true): string; public function toArray(bool $throw = true): array; 

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@dbrumann 60 T h e c o m p o n e n t i s b u i l t f o r m a x i m u m H T T P p e r f o r m a n c e . B y d e s i g n , i t i s c o m p a t i b l e w i t h H T T P / 2 a n d w i t h d o i n g c o n c u r r e n t a s y n c h r o n o u s s t r e a m e d a n d m u l t i p l e x e d r e q u e s t s / r e s p o n s e s . E v e n w h e n d o i n g re g u l a r s y n c h ro n o u s c a l l s , t h i s d e s i g n a l l o w s k e e p i n g c o n n e c t i o n s t o re m o t e h o s t s o p e n b e t w e e n re q u e s t s , i m p ro v i n g p e r f o r m a n c e b y s a v i n g re p e t i t i v e D N S re s o l u t i o n , S S L n e g o t i a t i o n , e t c . To l e v e r a g e a l l t h e s e d e s i g n b e n e f i t s , t h e c U R L e x t e n s i o n i s n e e d e d . 

@dbrumann 61 Thank You!